/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import model.db.TwitterDB;
import org.json.JSONArray;
import org.json.JSONObject;

/**
 *
 * @author rajin
 */
public class LocationServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("application/json;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
           String location = request.getParameter("location");
           String fromDate = request.getParameter("fromDate");
           String toDate = request.getParameter("toDate");
           String user = request.getParameter("user");
           String topic = request.getParameter("topic");
           TwitterDB db = new TwitterDB();
           JSONObject result = new JSONObject();
           JSONArray userArray = db.getTopUsersInLocation(location,fromDate,toDate, user, topic);
           JSONArray topicArray = db.getTopTopicsInLocation(location,fromDate,toDate,user, topic);
           JSONArray tweetLocationArray = db.getTweetLocationsInLocation(location,fromDate,toDate,user, topic);
           JSONArray continentInfoArray = db.getContinentInfo(location,fromDate,toDate,user, topic);
           
           result.put("TopUsers", userArray);
           result.put("TopTopics", topicArray);
           result.put("TweetLocations", tweetLocationArray);
           result.put("ContinentInfo", continentInfoArray);
                   
           
           out.println(result);
        }
        catch(Exception e)
        {
            out.println(e.getMessage());
        }
        finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
